Executing two loops at the same time

Question

Sang Heon Lee 2017-9-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/357656-executing-two-loops-at-the-same-time

评论： Sang Heon Lee 2017-9-21

What I am trying to do is applying different calculations depending on whether the number is odd or even.

 n = input('Your number = ');
 i = 1;
 while n ~= 1
 while rem(n,2) == 0
    n = (n/2);
    i = i + 1;
 end
 while rem(n,2) == 1
    n = (3*n) + 1;
    i = i + 1;
 end
 end
 i

This is what I have currently. However when I enter n, the script runs forever and I have to restart the matlab. How can I make this loop to continue until n reaches 1?

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Answer 1

JESUS DAVID ARIZA ROYETH 2017-9-21

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https://ww2.mathworks.cn/matlabcentral/answers/357656-executing-two-loops-at-the-same-time#answer_282487

在 MATLAB Online 中打开

you can do like this:

n = input('Your number = ');
 i = 1;
 while n ~= 1
 while rem(n,2) == 0 && n ~= 1
    n = (n/2);
    i = i + 1;
 end
 while rem(n,2) == 1 && n ~= 1
    n = (3*n) + 1;
    i = i + 1;
 end
 end
 i